Trolley-wheel.



L. J. TETLOW.

TROLLEY WHEEL.

APPLICATION rum) MAY 4, 1909.

,OOO,854;, Patented Aug. 15, 1911.

WITNESSES: j INVENTOR,

v o I ATTORNEK urr 'ra 'rs LEWIS J. TETLOW, OF HOLYOKE, MASSACHUSETTS,ASSIGNOR TO NEW ENGLAND TROLLEY WHEEL COMPANY, OF HOLYOKE,MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

TROLLEY-WHEEL.

To all whom it may concern:

Be it known that I, LEWIS J. TETLOW, a citizen of the United States ofAmerica, and resident of Holyoke, in the county of Hampden and State ofMassachusetts, have invented certain new and useful Improvements inTrolley-Wheels, of which the following is a full, clear, and exactdescription.

One object of this invention is to provide a construction of trolleywheel which is largely composed of iron, such wheel including, however,portions of brass, copper, or like metal of highconductivity whichimpart all requisite operative capabalities to the wheel, but whichacquire, in the production of the latter a very appreciable decreasein'cost.

Another object'of the invention is to provide in a wheel having thecharacteristics such as above set forth, means for the lubrication inrelation to the axle carried in the harp on which the wheel isrotatively mounted.

The invention consists in the combination or arrangement of parts andthe constructions of certain of the parts all substantially ashereinafter described in conjunction with the accompanying drawings andset forth in the .claims.

In the drawings :Figure l is a sectional view through the improvedtrolley wheel on the plane of its axis, such wheel being shown asmounted in a harp. The section line 1l, on Fig. 2 indicates the plane onwhich Fig. 1 is taken. Fig. 2 is a sectional view at right angles to-Fig. 1, taken onthe line 22. Fig. 3 is a perspective view showing, inseparated relations, the body of the wheel, the lubricant casing and thebushing, structural features of all of which will be hereinafterparticularly pointed out.

Similar characters of reference indicate corresponding parts in all ofthe views.

In the drawings,A represents the body of the trolley wheel, the samebeing composed of iron and constructed with a peripheral groove a and acentral cylindrical aperture b. The grooved and centrally apertured bodyof the wheel has essentially a hole d extended radially from thecentralaperture 1) to the base of its peripheral groove,-although inpractice a plurality of these apertures (Z are included in the ironWheel body.

Specification of Letters Patent. Patented Aug, 15, 1911.

Application filed. May 4, 1909.

Serial No. 493,947.

mentioned radial holes d.

C represents a casing for constituting the lubricant holder, the sameconsisting of a member of generally annular form comprising opposite endcheeksh h and spaced cheek-connecting portions 71 i, said annular memberbeing tightly fitted in the central aperture of the wheel body, thelubricant chambers j j being created and separated one from another bythe said check connecting portions z',--and these lubricant chambers areoutwardly closed by the internal wall of the wheel body A. One of thesaid cheek connecting portions 2' has a hole on extending radially fromits periphery to the central opening in the annular member C, said holebeing in registry with one of the radial holes (Z in the iron wheel bodyand having a piece 0 of copper, or like good conducting metal therein,the outer end of such conducting piece having connection with one of theinward extensions f of the brass or bronze trolley wire bearing portionB.

D represents a bushing sleeve of brass or like good conducting metal,tightly fitted in the central aperture of the said annular member andhaving a peripheral groove t between its ends in communication with eachand all of the aforementioned radially ar ranged and inwardly openinglubricant chambers j, and the said bushing has a duct, or a pair ofducts a leading from the peripheral groove to its central axle borethrough which the supporting axle E is fitted.

The bushing D is, as shown in Fig. 1, slightly longer than the axialdimension of the annular lubricant carrying member 0 so as to project atopposite ends beyond the cheeks of said member whereby the trolley wheelreceives on the ends of the brass bushing the bearing of the contactsprings 0 o,the course of the current, as apparent, being from thetrolley wire to and through the annular brass or bronze portion B and byway of one of the extensions f thereof to and through the copper plug orpiece 0, the inner end of which has a contact on, or connection with,the bushing, and

thence by way of the bushing t0 the contact springs, finally beingcarried through the trolley harp and pole as usual.-

" The annular member G is connected into opening of the annular member Cwith a.

driving fit and is secure against accidental displacement therefrom.

quantity of heavy grease is forced into and fills the radial chambers inthe part C, after such part has been forced into the wheel body andbefore the bushing is driven into the said par-t C and the freedom ofthe delivery of the lubricant may be predetermined by making the annulargroove and the ducts u, either or both, larger or smaller, as dictatedby the judgment of the constructor and as influenced by the character ofthe lubricant to be employed.

Under and in accordance with this invention, a steel body is to beconsidered as the equivalent of an iron body, and the trolley wirebearing part B, the bushing D, and the piece or plug 0 which forms goodelectrical connection between the parts B and D, may be of any metal orcomposition of satisfactorily high conductivity, the same beinggenerally one having copper as a large component.

1. A trolley wheel body having a central, cylindrical transverse openingtherein, a tubular member tightly engaged in said central opening, saidtubular member having a plurality of equally spaced radial openings,extending entirely therethrough, a bushing tightly engaged in saidtubular member and having an oil duct formed therethrough, and meansother than the material of said tubul-ar member and of greaterconductivity than said tubular member providing electrical connectionbetween said bushing and the trolley wheel body. I T1,?

2. A trolley wheel comprisingla(peripherally grooved and centrallyapertured body composed of iron, and constructed with a hole extend-edradially from the central aperture to the base of its peripheral groove,a trolley wire-bearing portion composed of a metal of betterconductivity than that from In the making of this trolley wheel a;

which the body is made, cast in the base of the groove and having aninwardly projecting extension thereof interlocked in and filling saidradial hole, an annular member comprising opposite end cheeks and spacedcheek-connecting portions tightly fitted in the central aperture of thewheel body, creating lubricating chambers separated by the saidconnecting portions, and one of said connecting portions having a holetherethrough extending radially from its periphery to the centralopening in the annular member, said hole being in registry with theradial hole in the iron wheel body and having a piece of the metal ofbetter conductivity therein, the outer end thereof forming connectionwith said inward extension of the trolley wire bearing portion, abushing sleeve of the metal of better conductivity, tightly fitted inthe said annular member, having a peripheral groove between its ends, incommunication with said lubricant chambers, and having a duct leadingfrom said groove to its axle receiving bore,said bushing sleeve beingperipherally in connection with said last named piece;

Signed by me at Springfield, Mass, in presence of two subscribingwitnesses.

LEWVIS J. TETLOW. Witnesses:

WM. S. BELLOWS, G. R. DRIsooLL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

